main.c

本程序实现通过BDM方式访问MOTOROLA 9S12单片机EEPROM

/****************************************Copyright (c)**************************************************
**                                    大连双马电子有限公司
**                                       研   发   部
**                                         研发一部 
**
**                                 http://www.smelecom.com/
**
** 文   件   名: Motorola MCU 11series programme for unencrypt read、write and erase
** 编 写  日 期: 2006年7月17日
** 描        述: This programme is used for read and write the Motorola 11series MCU
** 版	     本: the first one 
** 编	     者: 宋晓伟
***********************************************************************************************************/
#include <reg54.h>
//#include <stdio.h>
//#include <absacc.h>
//#include <intrins.h>
#include <series sub.h>
#include <delay subroutine.h>
//#include <tr and re subroutine.h>


#define uchar unsigned char
#define uint unsigned int

sbit CTRLDIR =   P3^3;
sbit CTRL    =   P3^4;

sbit RST=P1^7;
sbit BDM=P1^4;

sbit relaycs = P1 ^ 6;	
sbit relaydin = P1 ^ 0;
sbit relaysck = P1 ^ 1;
uchar Instruction[5]; 


void J_Config(int config_value)
{
	uint m;
    m=0;

//	P4 &= ~(1<<0);			//控制J9
	delay100ms();delay100ms();
  	relaysck = 0;
	relaycs = 0;

    while(m<16)
    	{
		if(config_value & 1)
		  {
    	  relaydin=1;
    	  }
   		else 
		  {
          relaydin=0;
          }
	    relaysck=1;
	   
		relaysck=0;
	
	    m=m+1;
		config_value = config_value >> 1;
   
        }
	relaycs=1;				//锁存
	delay100ms();delay100ms(); 
	P4 &= ~(1<<0);
//	P4 |= (1<<0);
    delay100ms();delay100ms();
	
}
void operation()
{
	P4 &= ~(1<<2);
	CTRL=0;
	delay1ms();
	CTRLDIR=0;
	delay40ms();
	switch(Instruction[0])
        {
        case 0x88:Read_datas();;break;
   		case 0x99:Write_datas();break;
        case 0x77:Erase_datas();break;
        default:output(0x00);break;
        }    
    delay40ms();
	P4 |= (1 << 2);					//置灭绿灯 
	P4 &= ~(1 << 1);
	delay200ms();
	P4 |= (1 << 1);						//蜂鸣器 
}  

void In_instruction()
{
    int k1;
    for(k1=0;k1<5;k1++) 
	 {
     Instruction[k1]=input();	
     }
}

uchar Pin_detect() 
{
    uchar result=0;

   	if(BDM==1)
		result|=0x40;
	if(RST==1)
		result|=0x01; 
    return(result);
}

void main()
{
	uchar pin_result;				//define the pin value//
	uchar pin_result_fail;
	delay100ms();
	output(0x55);
	delay4ms();
	

//	EA=1;
//    ET1=1;
    while(1)
        { 	
		P4 |= (1 << 2);					//置灭绿灯	
		CTRL=1;
		delay1ms();
		CTRLDIR=1;			       
		In_instruction();

		J_Config(0x300c);		//配置所有主机继电器

		P4 |= (1 << 3);				//重新开始关闭报错灯	 

		pin_result=(Pin_detect());		//get the pin value//

		pin_result_fail=pin_result;

		pin_result|=0xbe;				
		if(pin_result==0xff)			//0xff,correct,or return the fault number//
			{
			output(0x55);
	 		output(pin_result);
       	    operation();
    		}
		else
			{
			output(0xaa);
			output(pin_result_fail); 
			P4 &= ~(1 << 3);					//报错点亮红灯+
			P4 &= ~(1 << 1);
			delay200ms();delay200ms();
			P4 |= (1 << 1);						//蜂鸣器
			delay200ms();delay200ms();
			P4 &= ~(1 << 1);
			delay200ms();delay200ms();
			P4 |= (1 << 1);						//蜂鸣器
			delay200ms();delay200ms();
			P4 &= ~(1 << 1);
			delay200ms();delay200ms();
			P4 |= (1 << 1);						//蜂鸣器
			}  
	   	} 
}